Filter



mec., 6, 949 H, KNIPPER 490,443

FILTER Filed April 15, 1945 v 2 sneeuw-sheet 1 INVENTOR.

LOUIS H. KNIPPER av y y@ Dea, 6, 1949 H. KMPPER 2,490,443

FILTER Filed April 15, 1945 2 Sheets-Sheet 2 INVENTOR.

LOUIS H. KNIPPER Patented Dec. 6, 1949 UNITED STATES ATENT OFFICE 1Claim. 1

This invention relates to a filter, one that can operate in a horizontalor vertical position direction independently and can be used with pumpsand other similar types of machinery used with water, oil, or otherliquids.

An object of the invention is to provide a device that avoids cloggingof the device as well as preventing foreign objects `from passing intothe pumps and causing wear on vital parts.

Another object of the invention is to provide a device that will operatefrom the topl thereof while the bottom remains inactive.

A further object of the invention is to provide v a device that isinexpensive to manufacture, easy to assemble, and efficient inoperation.

With these and other objects and advantages in view the inventioncomprises certain novel combinations, constructions and arrangements ofparts aswill be hereinafter described, illustrated in the accompanyingdrawings and more particularly pointed out in the appended claim.

In the drawings:

Fig. 1 is a side elevation of an embodiment of the invention.

Fig. 2 is an end view thereof.

Fig. 3 is a sectional view on the line 3-3 of Fig. l.

Fig. 4 is a modification of the coupling means of the device.

Fig. 5 is a sectional view thereof.

Fig. 6 is a detailed view of the screen holding rod.

Fig. 'l is an end View thereof.

Fig. 8 is a sectional View on the line 8-8 of Fig. 5 and,

Fig. 9 is a sectional View on the line 9-9 of Fig. 5.

Referring more in detail to the drawings the numeral l!) designates thetubular casing or body of the lter which can be made of sheet metal, barstock, or a suitable thermosetting plastic, as stated the body it istubular open at the end l2 and closed at the end I Il.

In Fig. l, the open end l2 is externally threaded for the reception of apump suction tube, or for connection to any other type of machinery withwhich the lter is to be used.

The casing il) is provided near the threaded portion of the end l2 witha shoulder i6 that can be round, square, or hexagonal for the receptionoi a wrench or 'other tool for the purpose of tightening the lter whenconnections are being made.

One side of the casing li! is provided with perforations or openings I3.

'ill

These openings I8 act as intakes for the liquid to be ltered and can beset in any position to suit the conditions of the liquid and the foreignobjects involved.

The openings are positioned in parallel rows and in relatively spacedstaggered relation to each other.

A circular mesh screen 2li having the ends thereof cleated in circularcollars 22 is positioned on the casing il! and is retained thereon bymeans ci screws 24. The mesh perforations can be of a size suitable tothe conditions existing at the time the filter is to be used.

The screen 20 is of a suiicient length to entirely cover the rows ofopenings I8 in the casing lil.

A circular inner mesh screen 25 having a rounded nose or end 23 and anopen end 29 is positioned in 'the casing il). This screen is preferablymade of brass, but can be made of any other non-corrosive material, andperforations in this screen will be of a size suitable for theprevailing conditions at the time the filter is to be used.

The diameter of the screen 2S is of a slightly smaller diameter than theinternal diameter of the casing l0 thus permitting suicient spacebetween the screen 26 and casing Il! to prevent clogging of the screen.

The screen 26 is retained in position in the casing It by means of acircular band or collar 30 which is secured to the open end 29 of thescreen 26 and a rod 32.

The band 30 has an outer circumference of a suilicient diameter toslidably iit in the inner circumference of the casing Il).

The rod 32 has a head 34 positioned Within and conforming to the roundedend 28 and passes through an opening 3S provided in the end 28 of thescreen 25. The rod 32 passes through an opening 38 in the closed end Illof the casing il).

The end of the rod is threaded and extends beyond the end of the casinglll to receive a complementary threaded nut 4B. In this fashion thescreen 26 is properly positioned and retained in the casing l0.

The space il thus provided by the length of the rod 32 acts as a trapfor small foreign objects and will prevent the clogging of the screen26.

In Fig. 4, is disclosed another method of coupling or connecting thelter to the pump or other machinery with which it is to be used.

In this -instance the end i2 of the casing is provided with a circulargroove 42.

The end l2 is received in the socket or sleeve 44 and is retainedtherein by a set screw 46 which enters the groove 44 and rotativelyretains the casing l0 therein, or if the set screw 46 is suiicientlytightened will retain the casing therein in a xed or set position.

The socket 44 can be a part of a pump suction tube 48, or can be made inany other fashion such as internally threaded for connecting the socket4 4 as desired.

It will be understood, therefore, by those skilled in the art that theembodiment of the invention herein disclosed accomplishes the objects ofthe invention and provides a device that can be used in a vertical orhorizontal position and can use mesh screens having various sizesof-perforations to meet the prevailing conditions existing at the vtimethe lter is to be used. It alsoha's other .advantages than those hereinparticularly referred to, also that various changes and modificationsmay be made without. departing from the Yspirit of the inventionor`thescope of the Vapings of `said casing, arcircularband of a diameterslightly smaller thanthe inner circumference of said casing slidablyfitted in said casing, an inner tubular screen of a diameter slightlysmaller than the inner circumference of said band and of alengthsubstantially less than the nto the closed end of the innertubular screen at one end and having its other end tln'eadably mountedin the closed end of the casing and pro- ;Vided with a lock nutexteriorly of the closed end ofthe casing.

LOUIS H. KNIPPER.

REFERENCES CITED `{ifi-1e following references are of record in the leof this patent:

UNITED STATES PATENTS Number Name Date 55,822 Cornelius June 26, 1866295,543 Jennings Mar. 25, 1884 1,216,848 Foster Mar. 13, 1917 1,303,438Wiehl May 13, 1919 1,328,944 Hills Jan. 13, 1920 1,579,917 Deming Apr.6, 1926 1,836,269 McKenzie Dec. 15, 1931 1,965,816 Van Derveer July 10,1984 2,032,140 Mallory et a1. Feb. 25, 1936 2,252,014 Lupfer Aug. 12,1941 2,346,682 Harris Apr. 18, 1944 FOREIGN PATENTS Number Country Date169,591 Great Britain Oct. 6. 1921 493,956 Great Britain Oct. 18, 1938

